Finding the Fourth Proportional to 311,811.40, 467,717.10 and 307,145.80
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Solution
The fourth proportional to 311,811.40, 467,717.10 and 307,145.80 is: 460,718.70
Step by Step Solution
- Step 1: Write the proportion equation
311,811.40 : 467,717.10 = 307,145.80 : x - Step 2: Convert to fraction form
311,811.40/467,717.10 = 307,145.80/x - Step 3: Cross multiply
311,811.40x = 467,717.10 × 307,145.80 - Step 4: Simplify right side
311,811.40x = 143,657,342,853.18 - Step 5: Solve for x
x = 143,657,342,853.18/311,811.40 - Step 6: Final answer
x = 460,718.70
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.